private DecodResult RealDeocde(byte[] data, int offset, int size)
{
int num3 = 0;
for (int i = 0; i < ((size > 6) ? 7 : size); i++)
{
if (data[i + offset] == 13 && data[i + offset + 1] == 10)
{
num3 = i;
break;
}
}
if (num3 < 1)
{
DecodResult decodResult = new DecodResult
{
Info = DecodState.Err
};
BadFormat = (true);
return(decodResult);
}
byte[] array2 = new byte[num3];
Buffer.BlockCopy(data, offset, array2, 0, array2.Length);
int num4;
try
{
num4 = HexCharToInt(array2);
}
catch
{
DecodResult decodResult = new DecodResult
{
Info = DecodState.Err
};
BadFormat = (true);
var result = decodResult;
return(result);
}
if (num4 == 0)
{
if (data[offset + size - 2] == 13 && data[offset + size - 1] == 10)
{
IsComplete = (true);
return(new DecodResult
{
Info = DecodState.Complete
});
}
return(new DecodResult
{
Info = DecodState.WaitNext
});
}
else
{
if (num3 + 2 + num4 + 2 > size)
{
return(new DecodResult
{
Info = DecodState.WaitNext
});
}
int num5 = num3 + 2 + num4 + offset;
if (data[num5] != 13 && data[num5 + 1] != 10)
{
DecodResult decodResult = default(DecodResult);
BadFormat = (true);
decodResult.Info = DecodState.Err;
return(decodResult);
}
byte[] array3 = new byte[num4];
Buffer.BlockCopy(data, offset + num3 + 2, array3, 0, array3.Length);
int chunkedLen = num3 + 2 + num4 + 2;
return(new DecodResult
{
Info = DecodState.Ok,
Data = array3,
ChunkedLen = chunkedLen
});
}
}
public byte[] Deocde(byte[] array, int num, int num2)
{
if (IsComplete || BadFormat)
{
return(null);
}
int num4;
if (num2 + ((_lastBytes == null) ? 0 : _lastBytes.Length) >= 5)
{
byte[] array2 = array;
if (_lastBytes != null)
{
array2 = new byte[_lastBytes.Length + num2];
Buffer.BlockCopy(_lastBytes, 0, array2, 0, _lastBytes.Length);
Buffer.BlockCopy(array, num, array2, _lastBytes.Length, num2);
_lastBytes = null;
num = 0;
num2 = array2.Length;
}
byte[] array3 = null;
while (true)
{
DecodResult decodResult = RealDeocde(array2, num, num2);
if (decodResult.Info == DecodState.Ok)
{
int num3 = decodResult.Data.Length;
if (array3 == null)
{
array3 = new byte[num3];
Buffer.BlockCopy(decodResult.Data, 0, array3, 0, num3);
}
else
{
num4 = array3.Length;
Array.Resize <byte>(ref array3, num4 + num3);
Buffer.BlockCopy(decodResult.Data, 0, array3, num4, num3);
}
num += decodResult.ChunkedLen;
num2 -= decodResult.ChunkedLen;
}
else
{
if (decodResult.Info == DecodState.Complete)
{
break;
}
if (decodResult.Info == DecodState.Err)
{
goto Block_9;
}
if (decodResult.Info == DecodState.WaitNext)
{
goto Block_10;
}
}
}
return(array3);
Block_9:
return(null);
Block_10:
_lastBytes = new byte[num2];
Buffer.BlockCopy(array2, num, _lastBytes, 0, num2);
return(array3);
}
if (_lastBytes == null)
{
_lastBytes = new byte[num2];
Buffer.BlockCopy(array, num, _lastBytes, 0, num2);
return(null);
}
num4 = _lastBytes.Length;
Array.Resize <byte>(ref _lastBytes, num4 + num2);
Buffer.BlockCopy(array, num, _lastBytes, num4, num2);
return(null);
}
